function showNumberWithAnimation(i,j,randNumber){
    var numberCell =$('#number-cell-'+i+"-"+j);

    numberCell.css('background-color',getNumberBackgroundColor(randNumber));
    numberCell.css('color',getNumberColor(randNumber));
    numberCell.text(randNumber);

    numberCell.animate({
        width:cellSideLength,
        height:cellSideLength,
        top:getPosTop(i,j),
        left:getPosLeft(i,j)
    },50);
}

function showMoveAnimation(fromx,fromy,tox,toy){
    var numberCell=$('#number-cell-'+fromx+'-'+fromy);
    numberCell.animate({
        top:getPosTop(tox,toy),
        left:getPosLeft(tox,toy)
    },200);
}

function updateScore(score){
    $('#score').text(score);
}